2.13inch e-Paper HAT (B)

Introduction

Note: The raw panel require a driver board, If you are the first time use this e-Paper, we recommend you to buy the HAT version or buy more one driver hat for easy use, otherwise you need to make the driver board yourself. And this instruction is based on the version with PCB or driver board.

212x104, 2.13inch E-Ink display HAT for Raspberry Pi, three-color, SPI interface

Interfaces

VCC	3.3V
GND	GND
DIN	SPI MOSI
CLK	SPI SCK
CS	SPI chip select (Low active)
DC	Data/Command control pin (High for data, and low for command)
RST	External reset pin (Low for reset)
BUSY	Busy state output pin (Low for busy)

Working principle

Introduction

This product is an E-paper device adopting the image display technology of Microencapsulated Electrophoretic Display, MED. The initial approach is to create tiny spheres, in which the charged color pigments are suspending in the transparent oil and would move depending on the electronic charge. The E-paper screen display patterns by reflecting the ambient light, so it has no background light requirement. Under sunshine, the E-paper screen still has high visibility with a wide viewing angle of 180 degree. It is the ideal choice for E-reading.

Communication protocol

Note: Different from the traditional SPI protocol, the data line from the slave to the master is hidden since the device only has display requirement.

CS is slave chip select, when CS is low, the chip is enabled.
DC is data/command control pin, when DC = 0, write command, when DC = 1, write data.
SCLK is the SPI communication clock.
SDIN is the data line from the master to the slave in SPI communication.

SPI communication has data transfer timing, which is combined by CPHA and CPOL.

CPOL determines the level of the serial synchronous clock at idle state. When CPOL = 0, the level is Low. However, CPOL has little effect to the transmission.
CPHA determines whether data is collected at the first clock edge or at the second clock edge of serial synchronous clock; when CPHL = 0, data is collected at the first clock edge.

There are 4 SPI communication modes. SPI0 is commonly used, in which CPHL = 0, CPOL = 0.

As you can see from the figure above, data transmission starts at the first falling edge of SCLK, and 8 bits of data are transferred in one clock cycle. In here, SPI0 is in used, and data is transferred by bits, MSB first.

e-Paper HAT Hardware/software setup

e-Paper HAT Codes description

Documentation

Demo code

Github

Datasheets

Datasheets

Related Resources

Question:

Working requirements of e-Paper?

Answer:

Two-color B/W e-paper
- 【Working】Temperature: 0~50°C; Humidity: 35%~65%RH
- 【Storage】Temperature: ≤30°C; Humidity: ≤55%RH; Max storage time: 6 months
- 【Transport】Temperature: -25~70°C; Max transport time: 10 days
- 【Unpack】Temperature: 20°C±5°C; Humidity: 50%RH±5%RH; Max storage time: Should be assembled in 72h
Three-Color e-Paper
- 【Working】Temperature: 0~40°C; Humidity: 35%~65%RH
- 【Storage】Temperature: ≤30°C; Humidity: ≤55%RH; Max storage time: 3 months
- 【Transport】Temperature: -25~60°C; Max transport time: 10 days
- 【Unpack】Temperature: 20°C±5°C; Humidity: 50%RH±5%RH; Max storage time: Should be assembled in 72h

When store three-color e-Paper, please refresh it to white, and keep the screen upward. Note that you need to update it at least every three months.

Question:

What do you need to note about e-Paper refreshing?

Answer:

Refresh mode
- Full refresh: e-Paper flicker when full refreshing to remove ghost image for best display.
- Partial refresh: It don't flicker if you use partial refresh (only some of the two-color e-paper support partial refresh). Note that you cannot use Partial refresh all the time, you should full refresh e-paper regularly, otherwise, ghost problem will get worse even damage.
Refresh rate
- When using, you should set the update interval at least 180s.(except Partial supportable types)
- Please set the e-Paper to sleep mode or power off it directly, otherwise, the e-Paper is damaged because of working in high voltage for long time.
- You need to update the content of three-color e-Paper at least one time every 24h to avoid from burn-in problem.
Working place
We recommend you to use the e-Paper indoor. If you need to set the e-paper outdoor, Please place the e-paper in shadow and protect it from UV. When you designed you e-paper product, you should take care about the working situation like temperature, humidity, etc.

Question:

How much could the flexible e-paper be bended

Answer:

The IC part of e-Paper cannot be bended, you can bend the display area in degree larger than 60°C

Question:

Why the e-Paper cant work with Arduino?

Answer:

The I/O level of Arduino is 5V, and the e-Paper should be driven with 3V3. If your Arduino cant drive the e-Paper successfully, please try to convert the level to 3.3V

You can also try to connect the Vcc pin to the 5V of Arduino to see whether the e-Paper works, but we recommend you not to use 5V for a long time.

Question:

Why does the color of e-Paper look a little black or grey?

Answer:

You can try to change the value of Vcom on demo codes.

Question:

Three-color e-paper looks more red/yellow than the picture on website?

Answer:

Because of different batch, some of them have aberration. Store the e-Paper right side up will reduce it. And if the e-Paper didn't be refreshed for long time, it will become more and more red/yellow. Please use the demo code to refresh the e-paper for several times in this case.

Question:

Why my e-paper has ghosting problem after working for some days

Answer:

Please set the e-paper to sleep mode or disconnect it if you needn't refresh the e-paper but need to power on your development board or Raspberry Pi for long time.Otherwise, the voltage of panel keeps high and it will damage the panel

Question:

Why the FPC of the e-Paper is broken after using for some times?

Answer:

Please make sure you have used it in correct way.

To：

Dear Customers, There may be a lag of several hours before we could process your order, depending on the time difference between your location and ours. Sincerely hoping your understanding!

Email(support)

services01@spotpear.com

TAG： Raspberry Pi Fisheye Camera IMX378 12.3MP 190° Wide Angle Roller shutter X1201 Raspberry Pi 5 UPS Board Uninterruptible Power Supply For 18650-Li-Battery (NOT includ) XIAO RA4M1 Tiny SuperMini Board For Arduino Uno IDE For SeeedStudio R7FA4M1 Raspberry Pi 5 PCIe to M.2 NVME SSD And Gigabit Ethernet RJ45 HAT RTL8111H M_KEY For 2230/2242/2260/2280 Round Rotary LCD touch screen 1.28inch 1.6inch 2.1inch Knob central control lighting LCD UNO Minima RA4M1 ZERO Tiny SuperMini R7FA4M1 Board Compatible With R4 For Arduino 1.5inch Display spotpear ESP32-S3 1.28inch Round LCD Industrial USB HUB USB3.2 Gen1 One-To-4U Onboard 7~36V DC power port For Multi Systems Raspberry Pi 6.25 inch DSI Display MIPI LCD Capacitive TouchScreen 720x1560 Electronic EYE 0.71 inch Round Double LCD Display Dual Screen For Arduino Raspberry Pi ESP32 Pico ST Raspberry Pi Camera NVIDIA-acess User Guide Sensor Raspberry Pi 5 Audio Raspberry Pi 1.44inch LCD display HAT Ranging Sensor Raspberry Pi Pico ST7789 Raspberry Pi Pico 2 RP2350B 2.41 inch AMOLED Development Board QSPI Display TouchScreen 450x600 RM690BO FT6336 QMI8658

Price：

$18.89

Model：

2.13inch-e-Paper-HAT-(B)

Raspberry Pi 2.13inch E Ink display HAT, red, black, white, 212x104

TAG： ESP32-S3 DeepSeek AI Box Robot Development Board N16R8 Toy Doll Option 0.71 inch Electronic Eyes Raspberry Pi Global Shutter Camera lenses 1.6MP IMX296 Sensor C CS Lenses Raspberry Pi 8inch LCD 768x1024 Capacitive TouchScreen HDMI Display Robotic Arm Gripper Mechanical claw Servo ST3215 CF35-12 Raspberry Pi PiKVM Type-C Power Signal Splitter With reverse power supply protection Raspberry Pi 10.85 inch e-Paper ink screen display black white 1360×480 For Arduino /Jetson /STM32 /ESP32 LuckFox SC3336 ESP32 1.54 inch ePaper Watch Raspberry Pi 5 PCIe Gigabit RJ45 ETH RTL8111H Pi5 ESP32-S3 ETH Camera PoE OV2640 OV5640 ESP32 C3 Industrial Modbus POE ETH Relay 30CH RTU Modbus TCP-Ethernet Digital Input PoE Power IOT Raspberry Pi USB Power Splitter Raspberry Pi RP2040 1.28inch Round LCD Raspberry Pi 3D Display HDMI to LVDS Attitude Sensor Raspberry Pi Screen Raspberry Pi 10.1 inch QLED Quantum Dot Display 1280x720 Capacitive Touchscreen Computer PC Jetson Game and Audio Speaker